return command

How does the return command work?

Thanks in advance for any help you guys can give me! =D

it ends the execution of the function where it is inserted, evaluates the expression which holds, and sends it back to the caller

Code:

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int foo(){
    return 4;
}
void bar(){
    int val;
    val = foo();
    // val has value 4
}

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calling function foo will return 4 to its caller

also putting return 0; ast the end of the program means the program has ran successfullygenerally if you wanted to make a multiplication function

Code:

---

int a;
int b;
int c;

mult( a, b ) {
a * b = c;
return c;
}

// this would multiply the vars passed iunto it and return the value of c
// ex.
int main()
{
cout<<"enter the first number to be multiplied\n";
cin>> a;  // put the uisers input into a
cout<<"\n the second? \n";
cin>> b; //put the users value into b
cout<<"\n the calue of << a <<" x "<< b << is << mult( a, b )"\n";
// this will return 4 if both numbers entered are 2
}

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i think thats good enough :P

i did it real fast so there might be minor errors. hope it helps

Also, you should note that you need to return the same type as the function.

Code:

---

int main()
{

return 0;

} //0 is a valid integer

float function()
{

return 3.14;

}//3.14 is a valid float value

istream& input( istream& input )
{

return input;

}//input is an input stream

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